[103543.460739] Linux video capture interface: v2.00
[103543.462425] stk11xx: Syntek USB2.0 webcam driver startup
[103543.462429] stk11xx: Copyright(c) 2006-2009 Nicolas VIVIEN
[103543.462455] stk11xx: Syntek USB2.0 - STK-1135 based webcam found.
[103543.462457] stk11xx: Syntek AVStream USB2.0 1.3M WebCam - Product ID 0x6A31.
[103543.462460] stk11xx: Release: 0005
[103543.462461] stk11xx: Number of interfaces : 1
[103543.463190] stk11xx: Initialize USB2.0 Syntek Camera
[103543.893161] stk11xx: Check device return error (0x0201 = 0C) !
[103544.115707] stk11xx: Syntek USB2.0 Camera is ready
[103544.115739] ------------[ cut here ]------------
[103544.115771] WARNING: CPU: 0 PID: 25838 at drivers/media/v4l2-core/v4l2-dev.c:775 __video_register_device+0x3e/0xaa3 [videodev]()
[103544.115775] Modules linked in: stk11xx(O+) videodev vfat fat snd_hrtimer ipv6 af_packet bnep bluetooth coretemp tun snd_pcm_oss snd_mixer_oss snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device vboxnetadp(O) vboxnetflt(O) vboxdrv(O) acpi_cpufreq mperf arc4 radeon hwmon microcode ohci_pci drm_kms_helper ttm serio_raw snd_hda_codec_si3054 snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_timer snd soundcore asus_laptop ath5k mac80211 firmware_class ath cfg80211 input_polldev sparse_keymap atl2 rtc_cmos rfkill thermal battery ac processor xts gf128mul cbc sha256_generic fuse xfs exportfs nfs lockd sunrpc fscache jfs reiserfs linear raid0 dm_raid raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid10 md_mod dm_snapshot dm_crypt
[103544.115953]  dm_mirror dm_region_hash dm_log dm_mod hid_sony usbhid ohci_hcd usb_storage ehci_pci ehci_hcd usbcore usb_common ahci libahci pata_atiixp libata
[103544.115994] CPU: 0 PID: 25838 Comm: modprobe Tainted: G           O 3.11.3-pf #1
[103544.115999] Hardware name: ASUSTeK Computer Inc. F5R                 /F5R       , BIOS 505     12/21/2007
[103544.116033]  00000000 00000000 dd7ddc58 c048ae03 00000000 dd7ddc88 c012b582 c05b9e94
[103544.116051]  00000000 000064ee fa09748c 00000307 fa08d62e fa08d62e ee281200 00001400
[103544.116069]  f58b88d4 dd7ddc98 c012b615 00000009 00000000 dd7ddce4 fa08d62e c06d823a
[103544.116086] Call Trace:
[103544.116105]  [<c048ae03>] dump_stack+0x49/0x77
[103544.116116]  [<c012b582>] warn_slowpath_common+0x74/0x8b
[103544.116140]  [<fa08d62e>] ? __video_register_device+0x3e/0xaa3 [videodev]
[103544.116161]  [<fa08d62e>] ? __video_register_device+0x3e/0xaa3 [videodev]
[103544.116187]  [<c012b615>] warn_slowpath_null+0x1d/0x1f
[103544.116210]  [<fa08d62e>] __video_register_device+0x3e/0xaa3 [videodev]
[103544.116222]  [<c01b5634>] ? kmem_cache_alloc+0x8f/0xb3
[103544.116236]  [<c03b4bdf>] ? device_private_init+0x31/0x49
[103544.116254]  [<fa0d5f8d>] v4l_stk11xx_register_video_device+0x70/0xa4 [stk11xx]
[103544.116271]  [<fa0d4733>] usb_stk11xx_isoc_handler+0x733/0x87f [stk11xx]
[103544.116326]  [<f8502feb>] usb_probe_interface+0x104/0x193 [usbcore]
[103544.116338]  [<c03b6e16>] driver_probe_device+0x84/0x18a
[103544.116378]  [<f8502a40>] ? usb_match_id+0x1d/0x49 [usbcore]
[103544.116387]  [<c03b6f8f>] __driver_attach+0x47/0x63
[103544.116400]  [<c03b5a04>] bus_for_each_dev+0x55/0x5f
[103544.116409]  [<c03b6a61>] driver_attach+0x17/0x19
[103544.116418]  [<c03b6f48>] ? __device_attach+0x2c/0x2c
[103544.116426]  [<c03b672d>] bus_add_driver+0xdb/0x1e0
[103544.116436]  [<c03b73c8>] driver_register+0x7a/0xd3
[103544.116476]  [<f8502205>] usb_register_driver+0x63/0x103 [usbcore]
[103544.116484]  [<c0487f4a>] ? printk+0x38/0x3a
[103544.116497]  [<fa0f1000>] ? 0xfa0f0fff
[103544.116513]  [<fa0f10fc>] init_module+0xfc/0x125 [stk11xx]
[103544.116524]  [<fa0f1000>] ? 0xfa0f0fff
[103544.116533]  [<c01003c0>] do_one_initcall+0x7f/0xff
[103544.116546]  [<c018421c>] ? jump_label_module_notify+0x13e/0x164
[103544.116559]  [<c014383c>] ? notifier_call_chain+0x2d/0x46
[103544.116570]  [<c0143a71>] ? __blocking_notifier_call_chain+0x42/0x4f
[103544.116582]  [<c0161f8a>] load_module+0x148a/0x199c
[103544.116596]  [<c016256e>] SyS_finit_module+0x52/0x5a
[103544.116619]  [<c048fc3a>] sysenter_do_call+0x12/0x22
[103544.116647] ---[ end trace 3877a075d571ef11 ]---
[103544.116650] stk11xx: Video register fail !
[103544.116673] usb_stk11xx_driver: probe of 1-7:1.0 failed with error -22
[103544.116757] usbcore: registered new interface driver usb_stk11xx_driver
[103544.116761] stk11xx: v2.2.0 : Syntek USB Video Camera
[104067.589720] stk11xx: usb_stk11xx_exit: Syntek USB2.0 webcam driver shutdown
[104067.589729] usbcore: deregistering interface driver usb_stk11xx_driver